Water-he ater btriklieb



Feb. 9 1926.v

A. L. HALL WATER HEATER BURNER Filed July 15 19,24.

l ATToRNEY.

Patented4 Feb. 9, l

iin-iran STATES PATENT I oFFlcn.

ALBERT HALL, 0F IiOS ANGELESCALIFORNIA, ASSIGNOR TO SMPLEX -IEATE'R COMPANY, 'OF LOS ANGELES, CALIFORNIA. A

WATER-HEATER BUTRNER.

To all 'who/.mit fin/@ny concern:

Be it known that l', Annnmla. HALL, a citizen ci the United States, residing; at Los Angeles, in the `county of Los Angel-es and State ot California. have invented certain neuT .and useful improvements in lWeten Heater Burners, ot ufliich the following is a .specitication Myv invention relates to burners and more particularly to water heaterlu1u'ne.rs,:andthe general object thereot is to provide :an iinproved automatic `water :h eater burner which will be simple in construction, and positive and eiiicient in operation.

`Other objects ,and l-advaintages will be made manifest in the following spcciicat-ion tor .an embodiment of the invention` illus trated in the accompanying' dra-wing.

Referring to the drawing:

Figure 1 is -va vertical longitudinal section ot my burner, with the rlower portion'o-t the water heater shown .in dotted lines.

Figure 2 isa horizontal section taken on' line 2-2 ot Figure 1. y

Figure 3 is a plan view of the burner.

ln the drawing' 1 indicates a vertical -cylinder in vvhic-h is mounted a piston 2. The lower end oiu said cylinder .is closed by la head 3 which is screw seated in said lower en-d Vot' the cylinder as indicated lat 4. The lower end ot said cylinder is provided with a port 5 while the upper end -otsaid cylinder is q ifrovided with a port 6. A sturtiing` box 7 is provided at the upper end of thecylinder 1, which sfr-uiting box ycomprises .a cup-shaped receptacle 8, a packing 9 and a gland 10 'which is screw seated in the upper end ot said receptacle. The receptacle 8 is formed integral with the upper head 11 oit the cylinder 1 with its low-er half depending: below said head within the cylinder and with its upper halt' project-ing.,r `above said cylinder head.

A tubular housing' 12 is formed with a lower ring-shaped fend Vmember 13, a gas chamber 14 located a short distance above said ring` member, a gas inlet 15 in the upper end ot said chamber and a needle valve Casing' 16 opposite said inlet, the ringl shaped member 13 being` joined to the :ras chamber 14 by a semi-cylindrical wall 17 at the rear side ot the member 'and chamber, leaving` the front ot the housing open between the -upper end ot the member 13 and the lower end ot the chamber 14 as indicated at 18, to permit access to the `gland 10, the head of which gland being located in the space 19 between said member-and chamber.

A rod `20 is adjustably connected at its low-er end to the .piston 2 and extends upthe chamber 14, the `piston being provided with a central .opening` 21 `through which the lower `end `ozt the .rod extends and there being nuts v22, y23 and `seated on .a thread en the lower end portion of the rod, the nuts @and 23 engaging` respectively the upper and lower sides ot the piston wall 26 and the nut 24 engaging and locking the nut 23. A ,packing ring; 27 tits on the piston rod A20 in .the bottom ci the chamber 14 and a pair ott disks 28 and 29 lit loosely on the rod, the disk 28 resting; upon the packing` ring` 27. A gas valve 30 is screw seated on aY wa-rdly t'hroi-:lpjhlthe` stu-fini@ box 7 and into Vth-read 31 on the upper end of the piston rod 2O `and a spring' 32 surrounds Jdie piston rod, bearing' at its lower end upon the disk 28 and at its upper end againstthe disk 29, which latter disk is held bv the spring; againstrthe upper side ot the valve 80.

A head 35 is screw seated in the upper end ot the chamber 14 as indicated at 86, said head having' a bore 37 in its lower side in the upper end rof which is fitted a valve seating` ring' 38 against which seats the gas valve 30V. The head 35 is formed with an upwardly ,projectingcylindrical fuel receptacle 39 the lower wall of' which is provided with an opening' 40 in communication Vwith the opening 41 in the center ot' rineBS. .The upper end of the receptacle 39 is closed by a disk 42 providedwith a central aperture 43. Y'i'he head is for-ined with an external annular flange 44 which rests upon 'the up. per end ot the chamber 14.

A tubular jet 45 is fitted at its lower end over the upper portion 46 of the body of the head 35 with the lower'edge of' the jet resting' upon thefflange 44 of said head. Air inlets 47 are 'provided in the lower portion` ot the jet 45 opposite the fuel receptacle'to supply the escaping` .trein the aperture 4?) with oxygen to support combustion. The upper end or nozzle 4S of the iet 45 is formed with a plurality of nozzle members 49, which, in cross section, extend radially from the center ot the jet, the conduits 50 ot said nozzle members convergingl upwardly, as indicated at 51, and inclining` outwardly 'from the tubular wall 52 ot the jet, as indi-` cated at 53, and terminating in elongated radial outlet slots 54 in the extremities of the nozzle members. The formation of the burner nozzle into a plurality of nozzlev members provided with ,elongated outlet slots and the vconvergence orn the nozzle vconduits to said slots provides a jet having maximum outlet area with means for er'-A fecting a maximum concentration of the fuel for combustion, whereby combustion takes place in a blue flame of maximum volume and heat intensity. A screen 55 is placed' across the inside of the liet 45 at the base of the nozzle 48 to prevent back firing of the flame into the upper end of the jet mixing chamber 56 below the screen. A de'lector 57 surrounds the iet 45, being secured to the jet by a set screw 58, and extends downwardly and outwardly from the jet to a plane substantially coincident with the center ofthe air inlets 47, which deflector prevents back liring of the llame around the outside of the `iet and through the air inlets 47 into the mixing chamber 56.

A pilot burner 60 comprises the valve casing 16, gas inlet port 61 in said casing' leading from the housing 14 opposite the gas inlet 15, a needle valve 62 in said casing controlling said port, an outlet port )il in said casing and a burner tube 64 leadingl from said outlet the nozzle 48. l

The gas inlet port 15 is `connected to :i gas supply pipe 65. A water conduit 66 is connectedpat one end to the cylinder port 6 and at its other end to an imperfect leaky check valve 67. A'pipe 68 is connected at one end to said check valve and at its other end to one end of an elbow 69, the other end of said elbow being connected to one end of a water heater coil 70 and the other end of said coil being connected to the water heater tube 71. The cold water supply pipe 7 2 is connected to the corner of the elbow 69. A bypass 7 3 is connected to the outlet port 5 and to the water heater valve 74 which is connected to the outlet end of the water heater tube 75. The hot water pipe 76 leads from the valve 74. l

The operation of my burner is as follows:

Normally the needle valve 62 is open and the pilot burner 60 lighted at the upper end vof the burner tube64. Vater enters both ends of the cylinder 1 through ports port to the vupper end of 5 and 6 but the ypiston'7 is held in its uppermost position and the valve 30 held closed on its seat by the spring 32, which overcomes the balance in water pressure in the lower and upper ends of the cylinder. When water is drawn from the heater through pipe 76, the water in the lower end of the cylinder l escapes through the port 5 and the bypass' 7 3, and additional water restricted by the leaky valve 67, enters the upper end of the cylinder through the port 6-and slowly forces the piston 7 downward.- ly and slowly opens the valve 30 so that the gas will pass gradually from the port l5 through the ports 41 and 40, the receptacle 39 and 'port 43 into the mixing chamber 56 and out through the burner vconduits 56, without blowingout the pilot light, whereupon said light will ignite the gas passing from the burner through said conduits#V TWhen the valve controlling pipe 76 is closed water again passes through the bypass 73 and the port 5 into the lower end of the cylinder v1, and restores the ybalance of pressure in the cylinder, whereupon the spring 32 overcoming said balance raises the piston 7 and closes the valve 30, thus shutting oil the burner.

A lconical projection 8O is formed on the face of the valve 30 which projects into the opening 41 of the valve seating ring 38 and prevents said opening from being closed by the compression of the ring by the valve 3() under the influence of the spring 32.

The pistonQ'ha's 'a peripheral groove 8l in the lower side of which is litted an expanysible metal packing ring 82, there being a packing 83V in thev groove above said ring. The ring S2 expands against the interior otv the cylinder 1 and' prevents the packing from being forced by the water pressure below the piston between the piston and cylinder. Y

Having thus described my invention what I claim is:

In a burner, a soft valve seating ring, a gas valve means for normally closing said valve under pressure, and a projection projecting into the opening of said ring to prevent clo'sing of said opening by the pressure of the valve against the ring.

Intestiinony whereof I aliix my signature.

ALBERT L. HALL. 

